Chemical and Ionic Equilibrium 2 Question 12

12. How many litres of water must be added to 1 L of an aqueous solution of HCl with a pH of 1 to create an aqueous solution with pH of 2 ?

(2013 Main)

(a) 0.1 L

(b) 0.9 L

(c) 2.0 L

(d) 9.0 L

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Solution:

  1. pH=1[H+]=101=0.1M

pH=2[H+]=102=0.01M

For dilution of HCl,M1V1=M2V2

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